feat: add methods to access Auth0 domain and client ID in Auth0Provider

[gyaneshgouraw-okta]

📝 Pull Request Description

🔄 Changes

• Adds getDomain and getClientId methods to the useAuth0 hook.
• These methods allow access to the Auth0 domain and client ID configured in the Auth0Provider.
• Updates the documentation with examples for the new methods.

🧪 Testing

• A new unit test was added for the Auth0Provider.
• The test verifies that getDomain() and getClientId() return the correct values.
• All existing and new tests pass.

💥 Impact

• This change allows developers to access the Auth0 configuration from any component within the provider's scope without prop drilling.
• The public API of the useAuth0 hook is extended with two new methods.
• There is no significant performance impact.

📋 Checklist

• Code follows the project's coding standards
• Tests have been added/updated
• Documentation has been updated
• All tests are passing